Graco 246418, Руководство пользователя

Страница: 6 / 22

309654 6
PROBLEM CAUSE SOLUTION
Pump output is low
Strainer (32) is clogged Clean strainer.
Piston ball is not seating Service piston ball. Manual 307806.
Piston packings are worn or damaged Replace packings. Manual 307806.
O-ring in pump is worn or damaged Replace o-ring. Manual 307806.
Intake valve ball is not seating properly Clean intake valve. Manual 307806.
Intake valve ball is packed with material Clean intake valve. Manual 307806. Do not
leave sprayer under pressure for more than 5
minutes when spraying texture and not actively
spraying.
Engine speed is too low Increase throttle setting.
Clutch is worn or damaged Replace clutch. Page 9.
Pressure setting is too low Increase pressure.
Gun tip is clogged Unclog tip. Manual 309653.
Fluid filter dirty Clean filter.
Large pressure drop in hose with heavy
materials Use larger diameter hose and/or reduce overall
length of hose. Use of more than 100 ft of 1/4
in. hose significantly reduces performance of
sprayer. Use 3/8 in. hose for optimum perfor-
mance (50 ft minimum).
Excessive paint leakage into
throat packing nut
Throat packing nut is loose Remove throat packing nut spacer. Tighten
throat packing nut just enough to stop leakage.
Throat packings are worn or damaged Replace packings. Manual 307806.
Displacement rod is worn or damaged Replace rod. Manual 307806.
Fluid is spitting from gun Air in pump or hose Check and tighten all fluid connections.
Reprime pump. Manual 309408.
Tip is partially clogged Unclog tip. Manual 309653.
Fluid supply is low or empty Refill fluid supply. Prime pump. Check fluid
supply often to prevent running pump dry.
Pump is difficult to prime
Air in pump or hose Check and tighten all fluid connections.
Reduce engine speed and cycle pump as
slowly as possible during priming.
Intake valve is leaking Clean intake valve. Be sure ball seat is not
nicked or worn and that ball seats well. Reas-
semble valve.
Pump packings are worn Replace pump packings. Manual 307806.
Paint is too thick Thin the paint according to the supplier’s
recommendations
Engine speed is too high Decrease throttle setting before priming pump.
Clutch squeaks each time
clutch engages Clutch surfaces are not matched to each other
when new and may cause noise Clutch surfaces need to wear into each other.
Noise will dissipate after a day of run time.
High engine speed at no
load Misadjusted throttle setting Reset throttle to 3700 engine rpm at no load
load
Worn engine governor Replace or service engine governor